baber/WOPTO huggingface dataset:
Patent GB-176401-A (GB)
Title: A system for controlling relays by means of wave trains, especially for wireless high speed telegraphy
IPC: H04L27/06
Filed: 1920-09-03
Abstract: 176,401. Siemens & Halske Akt.-Ges. Sept. 3, 1920. Addition to 146,354, [Class 40 (v), Wireless signalling &c.]. Systems employing valve amplifiers.-Modified arrangement of the means for controlling a relay described in the parent Specification comprise either (1) a rectified vacuum tube with a space-charge grid, one coil of a relay being in the anode circuit and another in the space-charge grid circuit, or (2) two tubes to utilize both halfperiods of the received oscillations. A single tube R, Fig. 1, having two grids G, G1, is used as a rectifier and one coil a of the relay to be operated is connected in the anode circuit and the other coil b in the circuit of the spacecharge grid G1. It is stated that the sum of the currents in the anode and space-charge grid circuits is constant, so that when the anode current increases owing to a positive potential on the grid G, the space-charge grid current decreases and a compensating-winding is used to annul the effect of the mean value to which it is reduced. This winding is preferably connected to the filament-heating battery. In order to use both half periods of an alternating current, the grids of the tubes I and II., Fig. 3, are normally at such potentials that no current and saturation current flow in the respective anode circuits. A coil in the space-charge grid circuit of each tube opposes the effect of a coil in its anode circuit. The grids of both tubes are connected to a coil a, b forming the secondary winding of a receiving transformer. When the end a of this coil is rendered positive by incoming signals, the current in the anode circuit of tube I increases, and that in its spacecharge grid circuit decreases, whilst no change occurs in the circuits of tube II and the coils S1 influence the relay armature. When the end a of coil ab is rendered negative by incoming signals, no current flows in the anode circuit of tube I and maximum current in its space-charge grid circuit, whilst currents in the respective circuits of tube II decrease and increase, the net result being that the currents in the coils S1 of the relay still exceed those in S2, By compensating as in the previous arrangement part of the currents flowing in S2 the armature is kept in its back position with the same power as in its working position. The two filaments may be heated by a common battery. An arrangement of four tubes, each with three electrodes, is also described in which the grids of two rectifying tubes R1, R2, Fig. 7, are connected to opposite ends of the secondary of a transformer coupled to the source of incoming energy and both anode currents pass through a resistance w1, w2. The voltage drop across this resistance is used to control two tubes G1, G11, the anode circuits of which are connected to the coils of the relay.
Patent GB-238742-A (GB)
Title: Driving gear for screw and like propellers of aircraft
IPC: B64D27/00
Filed: 1924-10-28
Abstract: 238,742. Trnka, J. Oct. 28, 1924. Propelling.-To enable the same power unit to be used efficiently with propellers requiring different outputs the usual propeller shaft b passes concentrically through a tubular member e fitted with a flange f for the attachment of an alternative heavier propeller, the member e, which is driven at a lower speed than the shaft b, carrying the planet wheels r. of an epicyclic gear. The carburettor of the engine may be regulated or exchanged when the propeller is changed. The planet wheels r gear with a sun pinion s upon the shaft b and with a toothed ring t secured to a fixed casing l. The member e has radial and thrust bearings j, k in the casing l, and similar bearings h, i are inserted between the member e and the shaft b. A member p, secured to the member e by bolts o passing through the planet pinions, has a bearing u upon the shaft b.
Patent GB-912316-A (GB)
Title: Improvements in or relating to facsimile apparatus
Inventor: MASON FREDERICK PERCIVAL
IPC: H04N1/48
Filed: 1961-07-14
Abstract: 912,316. Facsimile transmissions. CREED & CO. Ltd. July 14, 1961, No. 25670/61. Class 40 (3). In a facsimile transmission system the message-form &c. is scanned by light from a source 2 which may comprise a plurality of separate sources having a wide band colour spectrum to produce, in photo-sensitive devices 4, 5 which are responsive to different colours (e.g. red and blue), signals for application via amplifiers 6, 7 to an AND gate 8 which is therefore " opened " only when both devices 4, 5 respond simultaneously so that, considering a white message form carrying an inscription in red and blue, gate 8 opens to pass current from a source P to a modulator 9 (in amplifier 10) only during the scanning of those portions of the message-form which carry no inscription, i.e. the white portion which reflects both red and blue light. The modulator is thus switched " on " and a carrier from source 11 is sent over line 12 to a distant facsimile recorder at which it operates via an inverter to render the recording stylus inoperative. When the inscription on the message form is scanned the devices 4 and 5 do not respond simultaneously so that the carrier transmission is interrupted and this is arranged to cause the recording stylus to produce a facsimile copy in any desired colour. More than two photo-sensitive devices responsive to different colours may be employed with consequential changes in the form of gate 8. An apertured plate and lens system may be employed in the beam from source 2 (Fig. 2, not shown) or in the beams incident on the photosensitive devices (Fig. 3, not shown).
Patent GB-688071-A (GB)
Title: Improvements in or connected with gunwale fittings for skid fenders for life boats
IPC: B63B23/18
Filed: 1950-10-23
Abstract: 688,071. Brackets. TUCK, A. W. May 3, 1951 [Oct. 23, 1950], No. 25711/50. Class 52(v) [Also in Group XXXIII] A bracket to embrace the gunwale of a lifeboat is of T-form, one cross-member 5 carrying a dependent member 7 which can be slidingly adjusted towards the vertical member 13, thus contacting the gunwale side.
Patent GB-354572-A (GB)
IPC: H04N3/34
Filed: 1930-08-28
Abstract: 354,572. Television. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats-Unis, Montrouge, Seine, France. Aug. 28, 1930, No. 25761. Convention date, Sept. 25, 1929. [Class 40 (iii).] In television scanning consisting of two sweepings f1, f2 in opposite directions performed in less than one-tenth of a second to avoid the appearance of displacement of the bottom of the image caused if the slower component of the scanning movement is in one direction only, alternate bands of the object are transmitte d during one movement, and the bands omitted during the first movement are transmitted in the second movement. In the transmission of cinema films a scanning-disc is used with holes in two half spira s of different pitch and opposite sign, and the film is moved continuously. Alternatively the same scanning-disc is used as in ordinary television transmission, and the film is moved in jerks.
Patent GB-1212566-A (GB)
Title: Improvements in or relating to the manufacture of articles by deposition of material from a slurry
IPC: B22D7/10
Filed: 1968-05-30
Abstract: 1,212,566. Articles by deposition from slurry. FOSECO TRADING A.G. 30 May, 1968 [3 July, 1967], No. 25889/68. Heading B5A. A machine for manufacturing articles by the deposition of solid matter from a slurry on a hollow perforated mould 9 in which the slurry is subjected to a pressure difference whereby the slurry liquid is drained through the mould 9 while solid matter is deposited on one side of the mould 9 to form article 24, is characterized in that it is equipped with an air cylinder 19 closed at one end by a ball valve, the ball 21 of which is released by abutment 22 when the cylinder is lowered towards the mould 9 so that air under pressure is supplied to the interior of the mould 9 loosening the article 24 from it.
Patent GB-708797-A (GB)
Title: Wide angle objectives
IPC: G02B13/04
Filed: 1952-10-15
Abstract: 708,797. Optical objectives. VERKAUFS-AKT.- GES. H. WILDS' GEODATISCHE INTRUMENTE. Oct. 15, 1952 [Oct. 20, 1951; Oct. 30, 1951], No. 25897/52. Class 97(1) A wide angle objective consists of two compound converging components embracing the diaphragm position, and at least five diverging meniscus components, of which at least two are on the object side of the converging components while at least two are on the image side thereof. Optical data are given for three examples, two of which have three diverging menisci on the object side while the third has three diverging menisci on the image side. The latter example is shown. The axial separation between the air-exposed outer surfaces r<SP>5</SP> and r<SP>12</SP> of the compound components is between 0.4 and 1.6 times the equivalent focal length f, while the air space l<SP>3</SP> exceeds 0.03f. Each compound component has a dispersing cemented surface r<SP>6</SP> and r<SP>11</SP> and a collecting cemented surface r<SP>7</SP> and r<SP>10</SP>. The average refractive index of the diverging components is less than 1.60, while the average AbbÚ number is greater than 55. There may be broken contact between the elements of the compound components. Specification 680,185 is referred to.
Patent GB-171815-A (GB)
Title: Improvements in apparatus for heating liquids and for like purposes
IPC: F24H1/38
Filed: 1920-09-09
Abstract: 171,815. May, A. Sept. 9, 1920. Sectional boilers.-For heating liquids, a boiler is constructed of units. Each unit comprises a rectangular frame e and two recessed sheet metal plates a, with corrugations b and raised edges b<1>, joined by tubular nipples d, d<1>. The corrugations are arranged to form horizontal zig-zag passages b<2> for liquid between two adjacent units; heating gases pass upward through each section, the flues g being of varying cross-section owing to the situation of the corrugations b.
Patent GB-1178114-A (GB)
Title: Improvements in and relating to Superconductors
Inventor: BARBER ANTHONY CLIFFORD
IPC: B23K20/00
Filed: 1966-01-27
Abstract: 1178114 Super-conductors IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 18 Jan 1967 [27 Jan 1966 10 June 1966] 3757/66 and 25976/66 Headings H1A A5 and A4D A composite conductor is manufactured by mechanically working at an elevated temperature (high enough to bond but below the eutectic) a plurality of super-conductor elements with a "normal" conductive material to provide a plurality of super-conductor filaments or layers bonded to and within a matrix of "normal" material. Fig. 2 shows an assembly of Nb-44 wt. per cent Ti alloy rods S and copper rods C in a copper container T. The container is evacuated and sealed and extruded at 350-550C. Alternatively, sheet materials (with slots) may be used. The super-conductor may consist of niobium, or niobium alloyed with zirconium, titanium and hafnium and may contain as interstitial elements carbon, oxygen, nitrogen and hydrogen. The "normal" material may consist of copper, aluminium, silver, indium or cadmium. Other heattreatments are described. The mechanical working may consist of extrusion, drawing, rolling, forging or swaging.
Patent GB-729714-A (GB)
Title: Method and apparatus for warping
IPC: D02H3/00
Filed: 1953-09-21
Abstract: 729,714. Warping. CELANESE CORPORATION OF AMERICA. Sept. 21, 1953 [Sept. 23,1952], No. 25980/53. Class 142(1). To prevent selvedge threads 13 from creeping away from the ends of the beam 16 on which they are being wound, they pass round guide pins 22 so as to reach the beam ahead of the main warp threads 12 and ahead of the presser roll 18.
Patent GB-428429-A (GB)
Title: Improvements relating to hot-and cold-water supply pipes for spray fittings and the like
IPC: B01F5/04
Filed: 1934-09-11
Abstract: 428,429. Injeotors. SHANKS & CO., Ltd., and SHANKS, R. J., Tubal Works, Barrhead, Renfrewshire. Sept. 11, 1934, No. 26051. [Class 71] In hot and cold water supply pipes for spray fittings, &c., the high and low pressure supplies pass through valve controlled branches 2, 4 respectively to an injector. The cold water enters the centre nozzle 1, and the hot water, a concentric annular chamber 3. The supply is regulated by a longitudinallyadjustable spindle valve 5 screwed into the body of the injector, its exterior being enclosed in a water-tight housing 7 detachably mounted on the pipe body.
Patent GB-1393125-A (GB)
Title: Connection devices for alarm systems
IPC: G08B13/00
Filed: 1972-06-05
Abstract: 1393125 Intruder alarms SALIENT ELECTRONICS Inc 5 June 1972 [6 July 1971] 26087/72 Heading G4N An intruder alarm system of the type where a relay is normally energized via a completed series circuit and is de-energized when this circuit is broken, comprises a circuit portion 25 containing the usual battery and relay coil holding open a contact adapted to activate an alarm, not shown, upon closure, the portion being connected via the conductors 41, 42 of a cable 48 with a closed circuit loop contained in a box-like enclosure 1, the loop consisting of two frangible conductors 16, 17 and associated connections and being connected via a plug 43, 44 to the cable 48 through one end of the enclosure 1, the conductor 16 being enclosed and mounted as a coil on the internal surfaces of the enclosure whereas the conductor 17 is placed on the outside surface of the enclosure and lightly adhered thereto. In use, the surface containing the conductor 17 is adhered to an article which is desired to be protected such that any attempt at removal of the enclosure or at breaking it will result in breakage of the conductor 17 or 16 respectively. In a first modification, Fig. 3 (not shown) the enclosure 1 is adapted to have plug connectors inserted at both ends to act as a junction box and in a second modification, Fig. 7 (not shown) the cable 48 is taken into and passed out of the enclosure at the end remote from the plug to provide a physical closed loop when the plug is inserted which loop may be passed around an article to be protected.
Patent GB-859430-A (GB)
Title: Bed structure
Inventor: FREY LOUIS ELLIOTT
IPC: A47C19/00
Filed: 1959-07-30
Abstract: 859,430. Castors. DURO-BED CORPORATION. July 30, 1959, No. 26124/59. Class 52(1) A bed movable horizontally in an arcuate path about a vertical axis 18 and having a frame 10 supporting a spring unit has at each of the other comers a roller 30, 31, 32 rotatably supported on brackets 20, 21, 22 the rollers being tapered toward the axis 18 to prevent frictional drag between the rollers and the floor during pivotal movement of the bed.
Patent GB-518897-A (GB)
Title: Improvements relating to devices for indicating the rate of flow of air or other gases
IPC: G01P5/02
Filed: 1938-09-07
Abstract: 518,897. Actuating electric switches. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and JENKINS, A. Sept. 7, 1938, No: 26192. [Class 38 (v)] [Also in Group XX] A pivotally mounted vane 3 adapted to take up a position indicating a critical rate of flow of a gas stream on the left of a casing 1 projects through a slot 2. in the casing and is attached to a block 4 mounted in jewelled bearings 5 and carrying an adjustable counterweight in the form of a nut 7. The block 4 may carry a magnet 9 adapted to influence an armature to displace mercury within a tube 10 to complete a circuit 11, or the magnet may attract a soft iron needle bridging mercury contacts in a glass tube Alternatively the block 4 may carry a spring conact blade or a tilting mercury switch. A baffle 12 attached to the vane closes 'the slot 2 when the vane is displaced to one extreme position, to prevent the entrance of dust &c. to the casing. According to the Provisional Specification a toggle spring may be employed in place of the counterweight.
Patent GB-722769-A (GB)
Title: Improvements in television systems
Inventor: HOLLOWAY DENNIS GODSON
IPC: H04B1/66
Filed: 1952-10-18
Abstract: 722,769. Television. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Oct. 9, 1953 [Oct. 18, 1952], No. 26200/52. Class 40 (3). In a pulse-code television transmission system the signals to be transmitted are divided into a plurality of (different) frequency bands, each of which is converted to a pulse-code the number of digits in which is greater for low-frequency band than for a higher frequency band. This arrangement allows a greater number of discrete brightness levels to be transmitted in a given bandwidth than with conventional single-band coding. As shown in Fig. 2, the signals to be transmitted are applied (from terminal 10) to four filters 11-14, the outputs from 11-13 being converted to bands F/2 to zero, F/4 to zero and F/8 to zero, respectively (where F is the highest frequency to be transmitted) by means of frequency changes 15, 16, 17, respectively, and local oscillator 18. The outputs of the frequency changers and the output of filter 14 are then fed to coders 19-22 respectively, each of which comprises a sampling circuit, a quantizer and a coder and all of which are controlled by pulses at frequency F from a master pulse generator 23 so that the outputs of the coders are interleaved in time and therefore suitable for transmission along a common transmission channel 24. In order to avoid the need for transmission equipment capable of passing extra long pulses without distortion, e.g. a signal representing a constant brightness scene, the pulses in one or more of the channels (coder outputs) may be inverted in sign relatively to those of the remaining channels so that pulse trains representative of such scenes always contain components of fairly high frequency.
Patent GB-498702-A (GB)
Title: Improved magnesium alloy
IPC: C22C23/00
Filed: 1937-09-28
Abstract: A magnesium alloy contains 2-6 per cent bismuth, 0,5-3,0 cadmium, 1-5 aluminium, 1-3,5 zinc, the rest magnesium, or magnesium with additions of 0,1-1 per cent manganese or calcium or silicon, or of 0,1-2 of one of the metals of the iron group (iron nickel cobalt). The alloy has strength and corrosion resistance and may be used in vehicle and aircraft construction.
Patent GB-636116-A (GB)
Title: Improvements in or relating to mechanical pencils
IPC: B43K21/14
Filed: 1946-09-02
Abstract: 636,116. Propelling pencils. SCRIPTO, Inc., and SMITH. B. D. Sept. 2, 1946, No. 26309. [Class 146 (iii)] In a propelling pencil including an outer member or barrel 15 and an inner member 1.6 directly facing each other and relatively rotatable, the outer surface of the inner member 16 is longitudinally recessed at 26 or 27 over a portion of its circumference to provide a magazine space for spare leads 28, the non-recessed portion or portions providing a bearing surface or surfaces for engagement with the inner surface of the barrel 15, and the magazine space is closed by a shield 29 which is rotatable with the inner member 16 to prevent the leads from engaging the inner surface of the barrel 15. The member 16 has two recesses 26, 27 which are fluted to hold the leads 28 separately and has a channel 17 for a threaded member 18, which coacts with the internally threaded barrel 15, and has a clutch 19 for the leads. Each shield 29 is formed with a shelf 30 on which the leads 28 rest and a lip 32 by which the shield and leads may be raised when the ferrule 23 is removed. Relative rotation of the members is effected by means of a cap 20 crimped at 21 into a channel 22 in the barrel 15 and having openings 34 engaging the top end of the member 16 to provide a driving connection and through which the shields 29 project. The ferrule 23, which is provided with an eraser 24, is a frictional drive fit on to ridges on the cap 20.
Patent GB-810429-A (GB)
Title: Refrigerated storage tank
IPC: A01J9/04
Filed: 1957-08-21
Abstract: 810,429. Refrigerating; cooling liquids in bulk. U.S. INDUSTRIES Inc. Aug. 21, 1957 [April 15, 1957], No. 26383/57. Classes 29 and 64(3) [Also in Group XXV] A liquid, e.g. milk cooling tank consists of inner and outer shells 22, 24, supports 106 (adjustable for levelling) passing through the outer shell 24 and bearing on the inner shell 22 to minimize distortion thereof, an evaporator 72 secured to the outer surface of the lower part of the inner shell, a thermostat responsive to the milk &c. temperature for controlling the refrigerant 'compressor motor, and means for short circuiting the thermostat. This last means, which may be time controlled, is brought into action some time before liquid to be cooled is added to the tank thus preventing the previously cooled liquid being heated above the desired temperature by the added liquid. As shown, the tank is of semi-circular cross-section and has all its internal corners rounded. It has two lids 44 for access during cleaning, reach having a subsidiary lid 60 for adding liquid. The top carries an electric motor 82 actuating a detachable agitator 90. A dip-stick 57 is provided. The tank bottom slopes towards outlet cock 32. The evaporator comprises a corrugated plate secured to the inner shell to provided refrigerant circuits in parallel and each passageway includes a twisted baffle 78 welded to the corrugated plate. When the liquid reaches the desired low temperature, the thermostat is actuated to close a valve in the feed of refrigerant to the evaporator and to open one supply circuit to the compressor motor which still runs however until another supply circuit thereto is broken by the attainment of a low pressure in the evaporator; i.e. the compressor withdraws residual refrigerant from the evaporator before stopping so that the introduction of hot cleaning fluid will not cause excess pressure in the refrigerating system. The gaseous refrigerant flows through a dryer and then in heat exchange with the vapour flowing from the evaporator to the compressor. Condenser pressure is maintained by controlling the condenser cooling fans in dependence thereon. Agitator motor 82 can be controlled either manually or by the tank thermostat.
Patent GB-1269756-A (GB)
Title: A method for the continuous pneumatic treatment of fine material
IPC: B65D88/74
Filed: 1970-06-02
Abstract: 1,269,756. Mixing powders by gas currents. POLYSIUS A.G. 2 June, 1970 [28 Aug., 1969], No. 26455/70. Heading B1C. In a continuous method and apparatus for homogenizing a powder, e.g. cement, by air the treatment space is divided into a plurality of cross-sectional zones supplied cyclically with air at different rates, the incoming material being fed to the zone(s) which at any time are being supplied with little or no air. As shown the container 1 has a porous base 2 divided into twelve sections 4-15 respectively associated with twelve controllable inlets 20-31. At any time an opposed pair of sections, e.g. 4, 10, is strongly aerated and material is fed to the pair of sections 7, 13 as far as possible removed. Homogenized material leaves at 18. The arrangement ensures that material is fed on top of partly settled material in the container instead of falling through fluidized material of lower bulk density.
Patent GB-949283-A (GB)
Title: Improved electric circuit breakers
IPC: H01H71/40
Filed: 1962-07-10
Abstract: 949,283. Automatic circuit - breakers. FEDERAL PACIFIC ELECTRIC CO. July 10, 1962 [July 10, 1961], No. 26499/62. Heading H2B. In a circuit-breaker of the type comprising a contact arm 18 supported on a spring pivot 20; an actuator 26 pivoted to the arm and a current-responsive bi-metal 34 latching the actuator 26, the bi-metal 34 is rigidly attached to the moving contact 30a which is pivoted to the arm 18. A moderate overload deforms the bi-metal sufficiently after a short delay to release the actuator 26 allowing the contacts to open. An electromagnet 36 attached to the arm 18 attracts the bi-metal to effect instantaneous release on high overload. In a modification (Fig. 5, not shown), the electromagnet is mounted on the two part moulded casing 10. The core of the electromagnet may be made U-shaped to increase sensitivity or the coil may be omitted to decrease the sensitivity, the bi-metal itself then acting as a source of flux and attracting the core. The delayed and instantaneous tripping currents may be adjusted independently by forcing tapered pins into the apertures 18g, 18f respectively and slightly bending the arm 18.